Across
- 2. To bounce off
- 4. A disturbance that carries energy through matter or space
- 5. An increase (or decrease) in the frequency of sound, light, or other waves as the source and observer more towards (or away from) each other
- 7. The lowest point of a transverse wave
- 8. The apparent bending of waves around a small obstacle
- 10. Material through which waves travel
- 15. A wave that requires a medium in which to travel and carry energy
- 16. Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear
- 17. The ability to do work
- 18. A sound or series of sounds caused by the reflection of sound waves from a surface back to the listener
- 20. The change in direction of a wave due to a change in its medium
Down
- 1. The highest point of a transverse wave
- 2. Parts where the waves are spread out
- 3. Distance between 2 crests or troughs
- 6. Waves that move the medium parallel to the direction in which the waves travel
- 9. Parts where the waves are close together
- 11. Measure of wave energy; the distance between a waves' resting point and the top or the crest of the wave
- 12. A wave that transfers energy perpendicular to its medium, the energy moves one direction while the medium move at a right angle to it
- 13. The location of objects by reflected sound, in particular that used by animals such as dolphins and bats
- 14. A repeated back and forth or up and down motion
- 19. The quality of a sound made by the number of vibrations (the highness or lowness of a sound)